1 files changed, 70 insertions, 0 deletions

diff --git a/src/helpers/schedule-helpers.ts b/src/helpers/schedule-helpers.ts
new file mode 100644
index 000000000..754fd5556
--- /dev/null
+++ b/src/helpers/schedule-helpers.ts
@@ -0,0 +1,70 @@
+/* eslint-disable import/prefer-default-export */
+
+export function isInTimeframe(start: string, end: string) {
+  const [
+    startHourStr,
+    startMinuteStr,
+  ] = start.split(':');
+  const startHour = parseInt(startHourStr, 10);
+  const startMinute = parseInt(startMinuteStr, 10);
+
+  const [
+    endHourStr,
+    endMinuteStr,
+  ] = end.split(':');
+  const endHour = parseInt(endHourStr, 10);
+  const endMinute = parseInt(endMinuteStr, 10);
+
+  const currentHour = new Date().getHours();
+  const currentMinute = new Date().getMinutes();
+
+  // Check if the end time is before the start time (scheduled overnight)
+  // as we need to change our checks based on this
+  const endBeforeStart = (startHour > endHour || (startHour === endHour && startMinute > endMinute));
+
+  if (
+    // End is after start (e.g. 09:00-17:00)
+    !endBeforeStart
+    // Check if past start
+    && ((currentHour > startHour
+        || (
+          currentHour === startHour
+          && currentMinute >= startMinute
+        )
+    )
+      // Check that not past end
+      && (currentHour < endHour
+        || (
+          currentHour === endHour
+          && currentMinute < endMinute
+        )
+      ))
+  ) {
+    // We are in scheduled timeframe
+    return true;
+  }
+  if (
+    // End is before start (e.g. 17:00-09:00)
+    endBeforeStart
+    // Check if past start
+    && ((currentHour > startHour
+        || (
+          currentHour === startHour
+          && currentMinute >= startMinute
+        )
+    )
+      // Check that we are not past end
+      || (currentHour < endHour
+        || (
+          currentHour === endHour
+          && currentMinute < endMinute
+        )
+      ))
+  ) {
+    // We are also in scheduled timeframe
+    return true;
+  }
+
+  // We are not in scheduled timeframe
+  return false;
+}